#5419: moving fraction field to new coercion broke old pickles
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Reporter: craigcitro | Owner: craigcitro
Type: defect | Status: new
Priority: major | Milestone:
Component: algebra | Keywords:
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At some point, fraction fields were moved over to the new coercion model,
which is good -- except that it broke all the old pickles. This thread on
`sage-support` is about someone having a problem with them:
http://groups.google.com/group/sage-
support/browse_thread/thread/b5519db45a141819
The problem is that the old pickles don't have `_element_class` or
`_element_constructor` fields, and there was no factory function in place
-- so unpickling tries to directly create the object, which totally fails.
Putting the old `__call__` method back in place is an ugly hack to get
these to load, but it's not a good permanent solution.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5419>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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